You are attempting to reach an old Flash/DASH player that was the output of a very old project between Akamai and Adobe back in 2012. It was built for NAB12 only and has not been updated since. You should not use it for any current testing or playback. For Akamai's current debug DASH player, which is built from dash.js, please go to http://mediapm.edgesuite.net/dash/public/support-player/current/index.html.
PS - if you absolutely need to access that old player as an academic curiosty, you can do so here.